1351 lines
39 KiB
C++
1351 lines
39 KiB
C++
/*
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* Copyright 2007 by Aaron Seigo <aseigo@kde.org>
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* Copyright 2007 by Riccardo Iaconelli <riccardo@kde.org>
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* Copyright 2007 by Matt Broadstone <mbroadst@gmail.com>
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* Copyright 2006-2007 Fredrik Höglund <fredrik@kde.org>
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* Copyright 2007 by Marco Martin <notmart@gmail.com>
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* Copyright 2008 by Alexis Ménard <darktears31@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as
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* published by the Free Software Foundation; either version 2, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "iconwidget.h"
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#include "iconwidget_p.h"
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#include <QAction>
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#include <QApplication>
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#include <QPainter>
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#include <QGraphicsSceneMouseEvent>
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#include <QGraphicsView>
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#include <QStyleOptionGraphicsItem>
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#include <QTextLayout>
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#include <kglobalsettings.h>
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#include <kiconeffect.h>
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#include <kiconloader.h>
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#include <kicon.h>
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#include <kurl.h>
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#include <krun.h>
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#include <kmimetype.h>
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#include <kdebug.h>
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#include <kcolorscheme.h>
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#include <plasma/paintutils.h>
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#include <plasma/theme.h>
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#include "animator.h"
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#include "svg.h"
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/*
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TODO:
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Add these to a UrlIcon class
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void setUrl(const KUrl& url);
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KUrl url() const;
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*/
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namespace Plasma
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{
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IconWidgetPrivate::IconWidgetPrivate(IconWidget *i)
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: ActionWidgetInterface<IconWidget>(i),
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q(i),
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iconSvg(0),
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hoverAnimId(-1),
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hoverAlpha(20 / 255),
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iconSize(48, 48),
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states(IconWidgetPrivate::NoState),
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orientation(Qt::Vertical),
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numDisplayLines(2),
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activeMargins(0),
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iconSvgElementChanged(false),
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fadeIn(false),
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invertLayout(false),
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drawBg(false),
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textBgCustomized(false)
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{
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}
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IconWidgetPrivate::~IconWidgetPrivate()
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{
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qDeleteAll(cornerActions);
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}
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void IconWidgetPrivate::readColors()
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{
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textColor = Plasma::Theme::defaultTheme()->color(Theme::TextColor);
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if (qGray(textColor.rgb()) > 192) {
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shadowColor = Qt::black;
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} else {
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shadowColor = Qt::white;
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}
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if (!textBgCustomized) {
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textBgColor = Theme::defaultTheme()->color(Theme::HighlightColor);
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}
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}
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void IconWidgetPrivate::colorConfigChanged()
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{
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readColors();
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q->update();
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}
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void IconWidgetPrivate::iconConfigChanged()
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{
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if (!icon.isNull()) {
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q->update();
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}
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}
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IconAction::IconAction(IconWidget *icon, QAction *action)
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: m_icon(icon),
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m_action(action),
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m_hovered(false),
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m_pressed(false),
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m_selected(false),
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m_visible(false),
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m_animationId(-1)
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{
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}
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void IconAction::show()
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{
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if (m_animationId) {
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Animator::self()->stopElementAnimation(m_animationId);
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}
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rebuildPixmap();
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m_animationId = Animator::self()->animateElement(m_icon, Animator::AppearAnimation);
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Animator::self()->setInitialPixmap(m_animationId, m_pixmap);
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m_visible = true;
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}
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void IconAction::hide()
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{
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if (m_animationId) {
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Animator::self()->stopElementAnimation(m_animationId);
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}
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rebuildPixmap();
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m_animationId = Animator::self()->animateElement(m_icon, Animator::DisappearAnimation);
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Animator::self()->setInitialPixmap(m_animationId, m_pixmap);
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m_visible = false;
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}
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bool IconAction::isVisible() const
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{
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return m_visible;
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}
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bool IconAction::isPressed() const
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{
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return m_pressed;
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}
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bool IconAction::isHovered() const
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{
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return m_hovered;
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}
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void IconAction::setSelected(bool selected)
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{
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m_selected = selected;
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}
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bool IconAction::isSelected() const
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{
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return m_selected;
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}
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void IconAction::setRect(const QRectF &rect)
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{
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m_rect = rect;
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}
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QRectF IconAction::rect() const
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{
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return m_rect;
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}
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void IconAction::rebuildPixmap()
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{
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// Determine proper QIcon mode based on selection status
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QIcon::Mode mode = QIcon::Normal;
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if (m_selected) {
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mode = QIcon::Selected;
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}
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// Draw everything
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m_pixmap = QPixmap(26, 26);
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m_pixmap.fill(Qt::transparent);
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int element = IconWidgetPrivate::Minibutton;
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if (m_pressed) {
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element = IconWidgetPrivate::MinibuttonPressed;
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} else if (m_hovered) {
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element = IconWidgetPrivate::MinibuttonHover;
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}
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QPainter painter(&m_pixmap);
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m_icon->drawActionButtonBase(&painter, m_pixmap.size(), element);
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m_action->icon().paint(&painter, 2, 2, 22, 22, Qt::AlignCenter, mode);
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}
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bool IconAction::event(QEvent::Type type, const QPointF &pos)
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{
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if (m_icon->size().width() < m_rect.width() * 2.0 ||
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m_icon->size().height() < m_rect.height() * 2.0) {
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return false;
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}
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switch (type) {
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case QEvent::GraphicsSceneMousePress:
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{
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setSelected(m_rect.contains(pos));
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return isSelected();
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}
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break;
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case QEvent::GraphicsSceneMouseMove:
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{
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bool wasSelected = isSelected();
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bool active = m_rect.contains(pos);
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setSelected(wasSelected && active);
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return (wasSelected != isSelected()) || active;
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}
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break;
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case QEvent::GraphicsSceneMouseRelease:
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{
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// kDebug() << "IconAction::event got a QEvent::MouseButtonRelease, " << isSelected();
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bool wasSelected = isSelected();
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setSelected(false);
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if (wasSelected) {
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m_action->trigger();
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}
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return wasSelected;
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}
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break;
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case QEvent::GraphicsSceneHoverEnter:
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m_pressed = false;
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m_hovered = true;
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break;
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case QEvent::GraphicsSceneHoverLeave:
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m_pressed = false;
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m_hovered = false;
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break;
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default:
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break;
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}
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return false;
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}
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int IconAction::animationId() const
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{
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return m_animationId;
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}
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QAction *IconAction::action() const
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{
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return m_action;
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}
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void IconAction::paint(QPainter *painter) const
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{
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if (m_icon->size().width() < m_rect.width() * 2.0 ||
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m_icon->size().height() < m_rect.height() * 2.0) {
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return;
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}
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QPixmap animPixmap = Animator::self()->currentPixmap(m_animationId);
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if (m_visible && animPixmap.isNull()) {
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painter->drawPixmap(m_rect.toRect(), m_pixmap);
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} else {
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painter->drawPixmap(m_rect.toRect(), animPixmap);
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}
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}
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IconWidget::IconWidget(QGraphicsItem *parent)
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: QGraphicsWidget(parent),
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d(new IconWidgetPrivate(this))
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{
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d->init();
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}
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IconWidget::IconWidget(const QString &text, QGraphicsItem *parent)
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: QGraphicsWidget(parent),
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d(new IconWidgetPrivate(this))
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{
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d->init();
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setText(text);
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}
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IconWidget::IconWidget(const QIcon &icon, const QString &text, QGraphicsItem *parent)
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: QGraphicsWidget(parent),
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d(new IconWidgetPrivate(this))
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{
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d->init();
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setText(text);
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setIcon(icon);
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}
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IconWidget::~IconWidget()
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{
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delete d;
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}
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void IconWidgetPrivate::init()
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{
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readColors();
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QObject::connect(Plasma::Theme::defaultTheme(), SIGNAL(themeChanged()), q, SLOT(colorConfigChanged()));
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QObject::connect(KGlobalSettings::self(), SIGNAL(kdisplayPaletteChanged()), q, SLOT(colorConfigChanged()));
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QObject::connect(KGlobalSettings::self(), SIGNAL(iconChanged(int)), q, SLOT(iconConfigChanged()));
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// setAcceptedMouseButtons(Qt::LeftButton);
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q->setAcceptsHoverEvents(true);
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// Margins for horizontal mode (list views, tree views, table views)
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setHorizontalMargin(IconWidgetPrivate::TextMargin, 1, 1);
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setHorizontalMargin(IconWidgetPrivate::IconMargin, 1, 1);
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setHorizontalMargin(IconWidgetPrivate::ItemMargin, 0, 0);
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// Margins for vertical mode (icon views)
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setVerticalMargin(IconWidgetPrivate::TextMargin, 6, 2);
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setVerticalMargin(IconWidgetPrivate::IconMargin, 1, 1);
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setVerticalMargin(IconWidgetPrivate::ItemMargin, 0, 0);
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setActiveMargins();
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currentSize = QSizeF(-1, -1);
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background = new Plasma::FrameSvg(q);
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background->setImagePath("widgets/viewitem");
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background->setCacheAllRenderedFrames(true);
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}
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void IconWidget::addIconAction(QAction *action)
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{
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int count = d->cornerActions.count();
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if (count > 3) {
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kDebug() << "no more room for more actions!";
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}
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IconAction *iconAction = new IconAction(this, action);
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d->cornerActions.append(iconAction);
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connect(action, SIGNAL(destroyed(QObject*)), this, SLOT(actionDestroyed(QObject*)));
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iconAction->setRect(d->actionRect((IconWidgetPrivate::ActionPosition)count));
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}
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void IconWidget::removeIconAction(QAction *action)
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{
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foreach (IconAction *i_action, d->cornerActions) {
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if (i_action->action() == action) {
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delete i_action;
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d->cornerActions.removeAll(i_action);
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}
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}
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}
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void IconWidget::setAction(QAction *action)
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{
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d->setAction(action);
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}
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QAction *IconWidget::action() const
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{
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return d->action;
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}
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void IconWidgetPrivate::actionDestroyed(QObject *action)
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{
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QList<IconAction*>::iterator it = cornerActions.begin();
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while (it != cornerActions.end()) {
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if ((*it)->action() == action) {
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cornerActions.erase(it);
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break;
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}
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}
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q->update(); // redraw since an action has been deleted.
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}
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int IconWidget::numDisplayLines()
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{
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return d->numDisplayLines;
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}
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void IconWidget::setNumDisplayLines(int numLines)
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{
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if (numLines > d->maxDisplayLines) {
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d->numDisplayLines = d->maxDisplayLines;
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} else {
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d->numDisplayLines = numLines;
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}
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}
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void IconWidget::setDrawBackground(bool draw)
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{
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if (d->drawBg != draw) {
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d->drawBg = draw;
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QStyle *style = QApplication::style();
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int focusHMargin = draw ? style->pixelMetric(QStyle::PM_FocusFrameHMargin) : 1;
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int focusVMargin = draw ? style->pixelMetric(QStyle::PM_FocusFrameVMargin) : 1;
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d->setHorizontalMargin(IconWidgetPrivate::TextMargin, focusHMargin, focusVMargin);
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d->setHorizontalMargin(IconWidgetPrivate::IconMargin, focusHMargin, focusVMargin);
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d->setVerticalMargin(IconWidgetPrivate::IconMargin, focusHMargin, focusVMargin);
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d->currentSize = QSizeF(-1, -1);
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update();
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}
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}
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bool IconWidget::drawBackground() const
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{
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return d->drawBg;
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}
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QPainterPath IconWidget::shape() const
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{
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if (!d->drawBg || d->currentSize.width() < 1) {
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return QGraphicsItem::shape();
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}
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return PaintUtils::roundedRectangle(
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QRectF(QPointF(0.0, 0.0), d->currentSize).adjusted(-2, -2, 2, 2), 10.0);
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}
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QSizeF IconWidgetPrivate::displaySizeHint(const QStyleOptionGraphicsItem *option, const qreal width) const
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{
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if (text.isEmpty() && infoText.isEmpty()) {
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return QSizeF(.0, .0);
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}
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QString label = text;
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// const qreal maxWidth = (orientation == Qt::Vertical) ? iconSize.width() + 10 : 32757;
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// NOTE: find a way to use the other layoutText, it currently returns nominal width, when
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// we actually need the actual width.
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qreal textWidth = width -
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horizontalMargin[IconWidgetPrivate::TextMargin].left -
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horizontalMargin[IconWidgetPrivate::TextMargin].right;
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//allow only five lines of text
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const qreal maxHeight =
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numDisplayLines * Plasma::Theme::defaultTheme()->fontMetrics().lineSpacing();
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// To compute the nominal size for the label + info, we'll just append
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// the information string to the label
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if (!infoText.isEmpty()) {
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label += QString(QChar::LineSeparator) + infoText;
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}
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QTextLayout layout;
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setLayoutOptions(layout, option, q->orientation());
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QSizeF size = layoutText(layout, option, label, QSizeF(textWidth, maxHeight));
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return addMargin(size, TextMargin);
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}
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void IconWidgetPrivate::layoutIcons(const QStyleOptionGraphicsItem *option)
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{
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if (option->rect.size() == currentSize) {
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return;
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}
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currentSize = option->rect.size();
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setActiveMargins();
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//calculate icon size based on the available space
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qreal iconWidth;
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if (orientation == Qt::Vertical) {
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qreal heightAvail;
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//if there is text resize the icon in order to make room for the text
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if (text.isEmpty() && infoText.isEmpty()) {
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heightAvail = currentSize.height();
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} else {
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heightAvail = currentSize.height() -
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displaySizeHint(option, currentSize.width()).height() -
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verticalMargin[IconWidgetPrivate::TextMargin].top -
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verticalMargin[IconWidgetPrivate::TextMargin].bottom;
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//never make a label higher than half the total height
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heightAvail = qMax(heightAvail, currentSize.height() / 2);
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}
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//aspect ratio very "tall"
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if (currentSize.width() < heightAvail) {
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iconWidth = currentSize.width() -
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horizontalMargin[IconWidgetPrivate::IconMargin].left -
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horizontalMargin[IconWidgetPrivate::IconMargin].right;
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} else {
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iconWidth = heightAvail -
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verticalMargin[IconWidgetPrivate::IconMargin].top -
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verticalMargin[IconWidgetPrivate::IconMargin].bottom;
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}
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} else {
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//Horizontal layout
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QFontMetricsF fm(q->font());
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//if there is text resize the icon in order to make room for the text
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if (text.isEmpty() && infoText.isEmpty()) {
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// with no text, we just take up the whole geometry
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iconWidth = currentSize.height() -
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horizontalMargin[IconWidgetPrivate::IconMargin].left -
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horizontalMargin[IconWidgetPrivate::IconMargin].right;
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} else {
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iconWidth = currentSize.height() -
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verticalMargin[IconWidgetPrivate::IconMargin].top -
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verticalMargin[IconWidgetPrivate::IconMargin].bottom;
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}
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}
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iconSize = QSizeF(iconWidth, iconWidth);
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int count = 0;
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foreach (IconAction *iconAction, cornerActions) {
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iconAction->setRect(actionRect((IconWidgetPrivate::ActionPosition)count));
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++count;
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}
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}
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void IconWidget::setSvg(const QString &svgFilePath, const QString &elementId)
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{
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if (!d->iconSvg) {
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d->iconSvg = new Plasma::Svg(this);
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connect(d->iconSvg, SIGNAL(repaintNeeded()), this, SLOT(svgChanged()));
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}
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d->iconSvg->setImagePath(svgFilePath);
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d->iconSvg->setContainsMultipleImages(!elementId.isNull());
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d->iconSvgElement = elementId;
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d->iconSvgElementChanged = true;
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d->icon = QIcon();
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update();
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}
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QString IconWidget::svg() const
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{
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if (d->iconSvg) {
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return d->iconSvg->imagePath();
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}
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return QString();
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}
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QSizeF IconWidget::sizeHint(Qt::SizeHint which, const QSizeF & constraint) const
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{
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if (which == Qt::PreferredSize) {
|
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return sizeFromIconSize(KIconLoader::SizeMedium);
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} else {
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return QGraphicsWidget::sizeHint(which, constraint);
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}
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}
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void IconWidgetPrivate::hoverEffect(bool show)
|
|
{
|
|
if (show) {
|
|
states |= IconWidgetPrivate::HoverState;
|
|
}
|
|
|
|
fadeIn = show;
|
|
const int FadeInDuration = 150;
|
|
|
|
if (hoverAnimId != -1) {
|
|
Animator::self()->stopCustomAnimation(hoverAnimId);
|
|
}
|
|
|
|
hoverAnimId = Animator::self()->customAnimation(
|
|
40 / (1000 / FadeInDuration), FadeInDuration,
|
|
Animator::EaseOutCurve, q, "hoverAnimationUpdate");
|
|
}
|
|
|
|
void IconWidgetPrivate::hoverAnimationUpdate(qreal progress)
|
|
{
|
|
if (fadeIn) {
|
|
hoverAlpha = progress;
|
|
} else {
|
|
// If we mouse leaves before the fade in is done, fade out from where we were,
|
|
// not from fully faded in
|
|
hoverAlpha = qMin(1 - progress, hoverAlpha);
|
|
}
|
|
|
|
if (qFuzzyCompare(qreal(1.0), progress)) {
|
|
hoverAnimId = -1;
|
|
|
|
if (!fadeIn) {
|
|
states &= ~IconWidgetPrivate::HoverState;
|
|
}
|
|
}
|
|
|
|
q->update();
|
|
}
|
|
|
|
void IconWidgetPrivate::drawBackground(QPainter *painter, IconWidgetState state)
|
|
{
|
|
if (!drawBg) {
|
|
return;
|
|
}
|
|
|
|
if (state == IconWidgetPrivate::PressedState) {
|
|
background->setElementPrefix("selected");
|
|
} else {
|
|
background->setElementPrefix("hover");
|
|
}
|
|
|
|
if (qFuzzyCompare(hoverAlpha, 1)) {
|
|
background->resizeFrame(currentSize);
|
|
background->paintFrame(painter);
|
|
} else if (!qFuzzyCompare(hoverAlpha+1, 1)) {
|
|
background->resizeFrame(currentSize);
|
|
QPixmap frame = background->framePixmap();
|
|
QPainter bufferPainter(&frame);
|
|
bufferPainter.setCompositionMode(QPainter::CompositionMode_DestinationIn);
|
|
bufferPainter.fillRect(frame.rect(), QColor(0,0,0, 255*hoverAlpha));
|
|
bufferPainter.end();
|
|
painter->drawPixmap(QPoint(0,0), frame);
|
|
}
|
|
}
|
|
|
|
QPixmap IconWidgetPrivate::decoration(const QStyleOptionGraphicsItem *option, bool useHoverEffect, bool usePressedEffect)
|
|
{
|
|
QPixmap result;
|
|
|
|
QIcon::Mode mode = option->state & QStyle::State_Enabled ? QIcon::Normal : QIcon::Disabled;
|
|
QIcon::State state = option->state & QStyle::State_Open ? QIcon::On : QIcon::Off;
|
|
|
|
if (iconSvg) {
|
|
if (iconSvgElementChanged || iconSvgPixmap.size() != iconSize.toSize()) {
|
|
QImage img(iconSize.toSize(), QImage::Format_ARGB32_Premultiplied);
|
|
{
|
|
img.fill(0);
|
|
QPainter p(&img);
|
|
iconSvg->resize(iconSize);
|
|
iconSvg->paint(&p, img.rect(), iconSvgElement);
|
|
}
|
|
iconSvgPixmap = QPixmap::fromImage(img);
|
|
iconSvgElementChanged = false;
|
|
}
|
|
result = iconSvgPixmap;
|
|
} else {
|
|
const QSize size = icon.actualSize(iconSize.toSize(), mode, state);
|
|
result = icon.pixmap(size, mode, state);
|
|
}
|
|
|
|
if (usePressedEffect) {
|
|
result = result.scaled(result.size() * 0.9, Qt::KeepAspectRatio);
|
|
}
|
|
|
|
if (!result.isNull() && useHoverEffect) {
|
|
KIconEffect *effect = KIconLoader::global()->iconEffect();
|
|
// Note that in KIconLoader terminology, active = hover.
|
|
// We're assuming that the icon group is desktop/filemanager, since this
|
|
// is KFileItemDelegate.
|
|
if (effect->hasEffect(KIconLoader::Desktop, KIconLoader::ActiveState)) {
|
|
if (qFuzzyCompare(qreal(1.0), hoverAlpha)) {
|
|
result = effect->apply(result, KIconLoader::Desktop, KIconLoader::ActiveState);
|
|
} else {
|
|
result = PaintUtils::transition(
|
|
result,
|
|
effect->apply(result, KIconLoader::Desktop,
|
|
KIconLoader::ActiveState), hoverAlpha);
|
|
}
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
QPointF IconWidgetPrivate::iconPosition(const QStyleOptionGraphicsItem *option,
|
|
const QPixmap &pixmap) const
|
|
{
|
|
const QRectF itemRect = subtractMargin(option->rect, IconWidgetPrivate::ItemMargin);
|
|
|
|
// Compute the nominal decoration rectangle
|
|
const QSizeF size = addMargin(iconSize, IconWidgetPrivate::IconMargin);
|
|
|
|
Qt::LayoutDirection direction = iconDirection(option);
|
|
|
|
//alignment depends from orientation and option->direction
|
|
Qt::Alignment alignment;
|
|
if (text.isEmpty() && infoText.isEmpty()) {
|
|
alignment = Qt::AlignCenter;
|
|
} else if (orientation == Qt::Vertical) {
|
|
alignment = Qt::Alignment(Qt::AlignHCenter | Qt::AlignTop);
|
|
//Horizontal
|
|
} else {
|
|
alignment = QStyle::visualAlignment(
|
|
direction, Qt::Alignment(Qt::AlignLeft | Qt::AlignVCenter));
|
|
}
|
|
|
|
const QRect iconRect =
|
|
QStyle::alignedRect(direction, alignment, size.toSize(), itemRect.toRect());
|
|
|
|
// Position the pixmap in the center of the rectangle
|
|
QRect pixmapRect = pixmap.rect();
|
|
pixmapRect.moveCenter(iconRect.center());
|
|
|
|
// add a gimmicky margin of 5px to y, TEMP TEMP TEMP
|
|
// pixmapRect = pixmapRect.adjusted(0, 5, 0, 0);
|
|
|
|
return QPointF(pixmapRect.topLeft());
|
|
}
|
|
|
|
QRectF IconWidgetPrivate::labelRectangle(const QStyleOptionGraphicsItem *option,
|
|
const QPixmap &icon,
|
|
const QString &string) const
|
|
{
|
|
Q_UNUSED(string)
|
|
|
|
if (icon.isNull()) {
|
|
return option->rect;
|
|
}
|
|
|
|
const QSizeF decoSize = addMargin(iconSize, IconWidgetPrivate::IconMargin);
|
|
const QRectF itemRect = subtractMargin(option->rect, IconWidgetPrivate::ItemMargin);
|
|
QRectF textArea(QPointF(0, 0), itemRect.size());
|
|
|
|
if (orientation == Qt::Vertical) {
|
|
textArea.setTop(decoSize.height() + 1);
|
|
} else {
|
|
//Horizontal
|
|
textArea.setLeft(decoSize.width() + 1);
|
|
}
|
|
|
|
textArea.translate(itemRect.topLeft());
|
|
return QRectF(QStyle::visualRect(iconDirection(option), option->rect, textArea.toRect()));
|
|
}
|
|
|
|
// Lays the text out in a rectangle no larger than constraints, eliding it as necessary
|
|
QSizeF IconWidgetPrivate::layoutText(QTextLayout &layout, const QStyleOptionGraphicsItem *option,
|
|
const QString &text, const QSizeF &constraints) const
|
|
{
|
|
const QSizeF size = layoutText(layout, text, constraints.width());
|
|
|
|
if (size.width() > constraints.width() || size.height() > constraints.height()) {
|
|
if (action) {
|
|
q->setToolTip(action->text());
|
|
}
|
|
const QString elided = elidedText(layout, option, constraints);
|
|
return layoutText(layout, elided, constraints.width());
|
|
}
|
|
q->setToolTip(QString());
|
|
|
|
return size;
|
|
}
|
|
|
|
// Lays the text out in a rectangle no wider than maxWidth
|
|
QSizeF IconWidgetPrivate::layoutText(QTextLayout &layout, const QString &text, qreal maxWidth) const
|
|
{
|
|
QFontMetricsF metrics(layout.font());
|
|
qreal leading = metrics.leading();
|
|
qreal height = 0.0;
|
|
qreal widthUsed = 0.0;
|
|
QTextLine line;
|
|
|
|
layout.setText(text);
|
|
|
|
layout.beginLayout();
|
|
|
|
while ((line = layout.createLine()).isValid()) {
|
|
line.setLineWidth(maxWidth);
|
|
height += leading;
|
|
line.setPosition(QPointF(0.0, height));
|
|
height += line.height();
|
|
widthUsed = qMax(widthUsed, line.naturalTextWidth());
|
|
}
|
|
layout.endLayout();
|
|
|
|
return QSizeF(widthUsed, height);
|
|
}
|
|
|
|
// Elides the text in the layout, by iterating over each line in the layout, eliding
|
|
// or word breaking the line if it's wider than the max width, and finally adding an
|
|
// ellipses at the end of the last line, if there are more lines than will fit within
|
|
// the vertical size constraints.
|
|
QString IconWidgetPrivate::elidedText(QTextLayout &layout, const QStyleOptionGraphicsItem *option,
|
|
const QSizeF &size) const
|
|
{
|
|
Q_UNUSED(option)
|
|
|
|
QFontMetricsF metrics(layout.font());
|
|
const QString text = layout.text();
|
|
qreal maxWidth = size.width();
|
|
qreal maxHeight = size.height();
|
|
qreal height = 0;
|
|
|
|
// Elide each line that has already been laid out in the layout.
|
|
QString elided;
|
|
elided.reserve(text.length());
|
|
|
|
for (int i = 0; i < layout.lineCount(); i++) {
|
|
QTextLine line = layout.lineAt(i);
|
|
int start = line.textStart();
|
|
int length = line.textLength();
|
|
|
|
height += metrics.leading();
|
|
if (height + line.height() + metrics.lineSpacing() > maxHeight) {
|
|
// Unfortunately, if the line ends because of a line separator,
|
|
// elidedText() will be too clever and keep adding lines until
|
|
// it finds one that's too wide.
|
|
if (line.naturalTextWidth() < maxWidth &&
|
|
start + length > 0 &&
|
|
text[start + length - 1] == QChar::LineSeparator) {
|
|
elided += text.mid(start, length - 1);
|
|
} else {
|
|
elided += metrics.elidedText(text.mid(start), Qt::ElideRight, maxWidth);
|
|
}
|
|
break;
|
|
} else if (line.naturalTextWidth() > maxWidth) {
|
|
elided += metrics.elidedText(text.mid(start, length), Qt::ElideRight, maxWidth);
|
|
} else {
|
|
elided += text.mid(start, length);
|
|
}
|
|
|
|
height += line.height();
|
|
}
|
|
|
|
return elided;
|
|
}
|
|
|
|
void IconWidgetPrivate::layoutTextItems(const QStyleOptionGraphicsItem *option,
|
|
const QPixmap &icon, QTextLayout *labelLayout,
|
|
QTextLayout *infoLayout, QRectF *textBoundingRect) const
|
|
{
|
|
bool showInformation = false;
|
|
|
|
setLayoutOptions(*labelLayout, option, q->orientation());
|
|
|
|
QFontMetricsF fm(labelLayout->font());
|
|
const QRectF textArea = labelRectangle(option, icon, text);
|
|
QRectF textRect = subtractMargin(textArea, IconWidgetPrivate::TextMargin);
|
|
|
|
//kDebug() << this << "text area" << textArea << "text rect" << textRect;
|
|
// Sizes and constraints for the different text parts
|
|
QSizeF maxLabelSize = textRect.size();
|
|
QSizeF maxInfoSize = textRect.size();
|
|
QSizeF labelSize;
|
|
QSizeF infoSize;
|
|
|
|
// If we have additional info text, and there's space for at least two lines of text,
|
|
// adjust the max label size to make room for at least one line of the info text
|
|
if (!infoText.isEmpty() && textRect.height() >= fm.lineSpacing() * 2) {
|
|
infoLayout->setFont(labelLayout->font());
|
|
infoLayout->setTextOption(labelLayout->textOption());
|
|
|
|
maxLabelSize.rheight() -= fm.lineSpacing();
|
|
showInformation = true;
|
|
}
|
|
|
|
// Lay out the label text, and adjust the max info size based on the label size
|
|
labelSize = layoutText(*labelLayout, option, text, maxLabelSize);
|
|
maxInfoSize.rheight() -= labelSize.height();
|
|
|
|
// Lay out the info text
|
|
if (showInformation) {
|
|
infoSize = layoutText(*infoLayout, option, infoText, maxInfoSize);
|
|
} else {
|
|
infoSize = QSizeF(0, 0);
|
|
}
|
|
// Compute the bounding rect of the text
|
|
const Qt::Alignment alignment = labelLayout->textOption().alignment();
|
|
const QSizeF size(qMax(labelSize.width(), infoSize.width()),
|
|
labelSize.height() + infoSize.height());
|
|
*textBoundingRect =
|
|
QStyle::alignedRect(iconDirection(option), alignment, size.toSize(), textRect.toRect());
|
|
|
|
// Compute the positions where we should draw the layouts
|
|
labelLayout->setPosition(QPointF(textRect.x(), textBoundingRect->y()));
|
|
infoLayout->setPosition(QPointF(textRect.x(), textBoundingRect->y() + labelSize.height()));
|
|
//kDebug() << "final position is" << labelLayout->position();
|
|
}
|
|
|
|
QBrush IconWidgetPrivate::foregroundBrush(const QStyleOptionGraphicsItem *option) const
|
|
{
|
|
const QPalette::ColorGroup group = option->state & QStyle::State_Enabled ?
|
|
QPalette::Normal : QPalette::Disabled;
|
|
|
|
// Always use the highlight color for selected items
|
|
if (option->state & QStyle::State_Selected) {
|
|
return option->palette.brush(group, QPalette::HighlightedText);
|
|
}
|
|
return option->palette.brush(group, QPalette::Text);
|
|
}
|
|
|
|
QBrush IconWidgetPrivate::backgroundBrush(const QStyleOptionGraphicsItem *option) const
|
|
{
|
|
const QPalette::ColorGroup group = option->state & QStyle::State_Enabled ?
|
|
QPalette::Normal : QPalette::Disabled;
|
|
|
|
QBrush background(Qt::NoBrush);
|
|
|
|
// Always use the highlight color for selected items
|
|
if (option->state & QStyle::State_Selected) {
|
|
background = option->palette.brush(group, QPalette::Highlight);
|
|
}
|
|
return background;
|
|
}
|
|
|
|
void IconWidgetPrivate::drawTextItems(QPainter *painter,
|
|
const QStyleOptionGraphicsItem *option,
|
|
const QTextLayout &labelLayout,
|
|
const QTextLayout &infoLayout) const
|
|
{
|
|
Q_UNUSED(option)
|
|
|
|
painter->save();
|
|
painter->setPen(textColor);
|
|
|
|
// the translation prevents odd rounding errors in labelLayout.position()
|
|
// when applied to the canvas
|
|
painter->translate(0.5, 0.5);
|
|
|
|
labelLayout.draw(painter, QPointF());
|
|
|
|
if (!infoLayout.text().isEmpty()) {
|
|
painter->setPen(textColor);
|
|
infoLayout.draw(painter, QPointF());
|
|
}
|
|
painter->restore();
|
|
}
|
|
|
|
void IconWidget::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
|
|
{
|
|
Q_UNUSED(widget);
|
|
|
|
//Lay out the main icon and action icons
|
|
d->layoutIcons(option);
|
|
|
|
// Compute the metrics, and lay out the text items
|
|
// ========================================================================
|
|
IconWidgetPrivate::IconWidgetState state = IconWidgetPrivate::NoState;
|
|
if (d->states & IconWidgetPrivate::ManualPressedState) {
|
|
state = IconWidgetPrivate::PressedState;
|
|
} else if (d->states & IconWidgetPrivate::PressedState) {
|
|
if (d->states & IconWidgetPrivate::HoverState) {
|
|
state = IconWidgetPrivate::PressedState;
|
|
}
|
|
} else if (d->states & IconWidgetPrivate::HoverState) {
|
|
state = IconWidgetPrivate::HoverState;
|
|
}
|
|
|
|
QPixmap icon = d->decoration(option, state != IconWidgetPrivate::NoState, state & IconWidgetPrivate::PressedState);
|
|
const QPointF iconPos = d->iconPosition(option, icon);
|
|
|
|
d->drawBackground(painter, state);
|
|
|
|
// draw icon
|
|
if (!icon.isNull()) {
|
|
painter->drawPixmap(iconPos, icon);
|
|
}
|
|
|
|
// Draw corner actions
|
|
foreach (const IconAction *action, d->cornerActions) {
|
|
if (action->animationId()) {
|
|
action->paint(painter);
|
|
}
|
|
}
|
|
|
|
// Draw text last because it is overlayed
|
|
QTextLayout labelLayout, infoLayout;
|
|
QRectF textBoundingRect;
|
|
|
|
|
|
d->layoutTextItems(option, icon, &labelLayout, &infoLayout, &textBoundingRect);
|
|
|
|
QImage shadow(textBoundingRect.size().toSize() + QSize(4, 4),
|
|
QImage::Format_ARGB32_Premultiplied);
|
|
shadow.fill(Qt::transparent);
|
|
{
|
|
QPainter buffPainter(&shadow);
|
|
buffPainter.translate(-textBoundingRect.x(), -textBoundingRect.y());
|
|
d->drawTextItems(&buffPainter, option, labelLayout, infoLayout);
|
|
}
|
|
|
|
QPoint shadowOffset = QPoint(1, 2);
|
|
if (d->shadowColor.value() > 128) {
|
|
shadowOffset = QPoint(0, 1);
|
|
}
|
|
|
|
|
|
if (d->textBgColor != QColor() &&
|
|
!(d->text.isEmpty() && d->infoText.isEmpty()) &&
|
|
!textBoundingRect.isEmpty()) {
|
|
QRectF rect = textBoundingRect.adjusted(-2, -2, 4, 4);
|
|
painter->setPen(Qt::transparent);
|
|
QColor color = d->textBgColor;
|
|
color.setAlpha(60 * (1.0 - d->hoverAlpha));
|
|
painter->setBrush(color);
|
|
painter->setRenderHint(QPainter::Antialiasing);
|
|
painter->drawPath(PaintUtils::roundedRectangle(rect, 4));
|
|
}
|
|
|
|
PaintUtils::shadowBlur(shadow, 2, d->shadowColor);
|
|
painter->drawImage(textBoundingRect.topLeft() + shadowOffset, shadow);
|
|
d->drawTextItems(painter, option, labelLayout, infoLayout);
|
|
}
|
|
|
|
void IconWidget::setTextBackgroundColor(const QColor &color)
|
|
{
|
|
d->textBgCustomized = true;
|
|
d->textBgColor = color;
|
|
update();
|
|
}
|
|
|
|
QColor IconWidget::textBackgroundColor() const
|
|
{
|
|
return d->textBgColor;
|
|
}
|
|
|
|
void IconWidget::drawActionButtonBase(QPainter *painter, const QSize &size, int element)
|
|
{
|
|
qreal radius = size.width() / 2;
|
|
QRadialGradient gradient(radius, radius, radius, radius, radius);
|
|
int alpha;
|
|
|
|
if (element == IconWidgetPrivate::MinibuttonPressed) {
|
|
alpha = 255;
|
|
} else if (element == IconWidgetPrivate::MinibuttonHover) {
|
|
alpha = 200;
|
|
} else {
|
|
alpha = 160;
|
|
}
|
|
gradient.setColorAt(0, QColor::fromRgb(d->textColor.red(),
|
|
d->textColor.green(),
|
|
d->textColor.blue(), alpha));
|
|
gradient.setColorAt(1, QColor::fromRgb(d->textColor.red(),
|
|
d->textColor.green(),
|
|
d->textColor.blue(), 0));
|
|
|
|
painter->setBrush(gradient);
|
|
painter->setPen(Qt::NoPen);
|
|
painter->drawEllipse(QRectF(QPointF(.0, .0), size));
|
|
}
|
|
|
|
void IconWidget::setText(const QString &text)
|
|
{
|
|
d->text = KGlobal::locale()->removeAcceleratorMarker(text);
|
|
// cause a relayout
|
|
d->currentSize = QSizeF(-1, -1);
|
|
//try to relayout, needed if an icon was never shown before
|
|
if (!isVisible()) {
|
|
QStyleOptionGraphicsItem styleoption;
|
|
d->layoutIcons(&styleoption);
|
|
}
|
|
resize(sizeFromIconSize(d->iconSize.width()));
|
|
}
|
|
|
|
QString IconWidget::text() const
|
|
{
|
|
return d->text;
|
|
}
|
|
|
|
void IconWidget::setInfoText(const QString &text)
|
|
{
|
|
d->infoText = text;
|
|
// cause a relayout
|
|
d->currentSize = QSizeF(-1, -1);
|
|
//try to relayout, needed if an icon was never shown before
|
|
if (!isVisible()) {
|
|
d->layoutIcons(new QStyleOptionGraphicsItem);
|
|
}
|
|
resize(sizeFromIconSize(d->iconSize.width()));
|
|
}
|
|
|
|
QString IconWidget::infoText() const
|
|
{
|
|
return d->infoText;
|
|
}
|
|
|
|
QIcon IconWidget::icon() const
|
|
{
|
|
return d->icon;
|
|
}
|
|
|
|
void IconWidget::setIcon(const QString &icon)
|
|
{
|
|
if (icon.isEmpty()) {
|
|
setIcon(QIcon());
|
|
return;
|
|
}
|
|
|
|
setIcon(KIcon(icon));
|
|
}
|
|
|
|
void IconWidget::setIcon(const QIcon &icon)
|
|
{
|
|
d->icon = icon;
|
|
update();
|
|
}
|
|
|
|
QSizeF IconWidget::iconSize() const
|
|
{
|
|
return d->iconSize;
|
|
}
|
|
|
|
bool IconWidget::isDown()
|
|
{
|
|
return d->states & IconWidgetPrivate::PressedState;
|
|
}
|
|
|
|
void IconWidget::mousePressEvent(QGraphicsSceneMouseEvent *event)
|
|
{
|
|
if (event->button() != Qt::LeftButton) {
|
|
QGraphicsWidget::mousePressEvent(event);
|
|
return;
|
|
}
|
|
|
|
d->states |= IconWidgetPrivate::PressedState;
|
|
d->clickStartPos = scenePos();
|
|
|
|
bool handled = false;
|
|
foreach (IconAction *action, d->cornerActions) {
|
|
handled = action->event(event->type(), event->pos());
|
|
if (handled) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!handled && boundingRect().contains(event->pos())) {
|
|
emit pressed(true);
|
|
}
|
|
|
|
update();
|
|
}
|
|
|
|
void IconWidget::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
|
|
{
|
|
if (~d->states & IconWidgetPrivate::PressedState) {
|
|
QGraphicsWidget::mouseMoveEvent(event);
|
|
return;
|
|
}
|
|
|
|
if (boundingRect().contains(event->pos())) {
|
|
if (~d->states & IconWidgetPrivate::HoverState) {
|
|
d->states |= IconWidgetPrivate::HoverState;
|
|
update();
|
|
}
|
|
} else {
|
|
if (d->states & IconWidgetPrivate::HoverState) {
|
|
d->states &= ~IconWidgetPrivate::HoverState;
|
|
update();
|
|
}
|
|
}
|
|
}
|
|
|
|
void IconWidget::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
|
|
{
|
|
if (~d->states & IconWidgetPrivate::PressedState) {
|
|
QGraphicsWidget::mouseMoveEvent(event);
|
|
return;
|
|
}
|
|
|
|
d->states &= ~IconWidgetPrivate::PressedState;
|
|
|
|
//don't pass click when the mouse was moved
|
|
bool handled = d->clickStartPos != scenePos();
|
|
if (!handled) {
|
|
foreach (IconAction *action, d->cornerActions) {
|
|
if (action->event(event->type(), event->pos())) {
|
|
handled = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!handled) {
|
|
if (boundingRect().contains(event->pos())) {
|
|
emit clicked();
|
|
if (KGlobalSettings::singleClick()) {
|
|
emit activated();
|
|
}
|
|
}
|
|
emit pressed(false);
|
|
}
|
|
|
|
update();
|
|
}
|
|
|
|
void IconWidget::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event)
|
|
{
|
|
Q_UNUSED(event)
|
|
|
|
emit doubleClicked();
|
|
if (!KGlobalSettings::singleClick()) {
|
|
emit activated();
|
|
}
|
|
}
|
|
|
|
void IconWidget::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
|
|
{
|
|
//kDebug();
|
|
foreach (IconAction *action, d->cornerActions) {
|
|
action->show();
|
|
action->event(event->type(), event->pos());
|
|
}
|
|
|
|
d->hoverEffect(true);
|
|
update();
|
|
|
|
QGraphicsWidget::hoverEnterEvent(event);
|
|
}
|
|
|
|
void IconWidget::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
|
|
{
|
|
//kDebug() << d->cornerActions;
|
|
foreach (IconAction *action, d->cornerActions) {
|
|
action->hide();
|
|
action->event(event->type(), event->pos());
|
|
}
|
|
// d->states &= ~IconWidgetPrivate::HoverState; // Will be set once progress is zero again ...
|
|
d->hoverEffect(false);
|
|
update();
|
|
|
|
QGraphicsWidget::hoverLeaveEvent(event);
|
|
}
|
|
|
|
bool IconWidget::sceneEventFilter(QGraphicsItem *watched, QEvent *event)
|
|
{
|
|
Q_UNUSED(watched)
|
|
|
|
if (event->type() == QEvent::GraphicsSceneDragEnter) {
|
|
d->hoverEffect(true);
|
|
update();
|
|
} else if (event->type() == QEvent::GraphicsSceneDragLeave) {
|
|
d->hoverEffect(false);
|
|
update();
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void IconWidget::setPressed(bool pressed)
|
|
{
|
|
if (pressed) {
|
|
d->states |= IconWidgetPrivate::ManualPressedState;
|
|
d->states |= IconWidgetPrivate::PressedState;
|
|
} else {
|
|
d->states &= ~IconWidgetPrivate::ManualPressedState;
|
|
d->states &= ~IconWidgetPrivate::PressedState;
|
|
}
|
|
update();
|
|
}
|
|
|
|
void IconWidget::setUnpressed()
|
|
{
|
|
setPressed(false);
|
|
}
|
|
|
|
void IconWidgetPrivate::svgChanged()
|
|
{
|
|
iconSvgElementChanged = true;
|
|
q->update();
|
|
}
|
|
|
|
void IconWidget::setOrientation(Qt::Orientation orientation)
|
|
{
|
|
d->orientation = orientation;
|
|
resize(sizeFromIconSize(d->iconSize.width()));
|
|
}
|
|
|
|
Qt::Orientation IconWidget::orientation() const
|
|
{
|
|
return d->orientation;
|
|
}
|
|
|
|
void IconWidget::invertLayout(bool invert)
|
|
{
|
|
d->invertLayout = invert;
|
|
}
|
|
|
|
bool IconWidget::invertedLayout() const
|
|
{
|
|
return d->invertLayout;
|
|
}
|
|
|
|
QSizeF IconWidget::sizeFromIconSize(const qreal iconWidth) const
|
|
{
|
|
if (d->text.isEmpty() && d->infoText.isEmpty()) {
|
|
//no text, less calculations
|
|
return d->addMargin(d->addMargin(QSizeF(iconWidth, iconWidth), IconWidgetPrivate::IconMargin),
|
|
IconWidgetPrivate::ItemMargin);
|
|
}
|
|
|
|
QFontMetricsF fm = Plasma::Theme::defaultTheme()->fontMetrics();
|
|
qreal width = 0;
|
|
|
|
if (d->orientation == Qt::Vertical) {
|
|
// make room for at most 14 characters
|
|
width = qMax(fm.width(d->text.left(12)),
|
|
fm.width(d->infoText.left(12))) +
|
|
fm.width("xx") +
|
|
d->horizontalMargin[IconWidgetPrivate::TextMargin].left +
|
|
d->horizontalMargin[IconWidgetPrivate::TextMargin].right;
|
|
|
|
width = qMax(width,
|
|
iconWidth +
|
|
d->horizontalMargin[IconWidgetPrivate::IconMargin].left +
|
|
d->horizontalMargin[IconWidgetPrivate::IconMargin].right);
|
|
} else {
|
|
width = iconWidth +
|
|
d->horizontalMargin[IconWidgetPrivate::IconMargin].left +
|
|
d->horizontalMargin[IconWidgetPrivate::IconMargin].right +
|
|
qMax(fm.width(d->text), fm.width(d->infoText)) + fm.width("xx") +
|
|
d->horizontalMargin[IconWidgetPrivate::TextMargin].left +
|
|
d->horizontalMargin[IconWidgetPrivate::TextMargin].right;
|
|
}
|
|
|
|
qreal height;
|
|
qreal textHeight;
|
|
|
|
QStyleOptionGraphicsItem option;
|
|
option.state = QStyle::State_None;
|
|
option.rect = boundingRect().toRect();
|
|
textHeight = d->displaySizeHint(&option, width).height();
|
|
|
|
if (d->orientation == Qt::Vertical) {
|
|
height = iconWidth + textHeight +
|
|
d->verticalMargin[IconWidgetPrivate::TextMargin].top +
|
|
d->verticalMargin[IconWidgetPrivate::TextMargin].bottom +
|
|
d->verticalMargin[IconWidgetPrivate::IconMargin].top +
|
|
d->verticalMargin[IconWidgetPrivate::IconMargin].bottom;
|
|
} else {
|
|
//Horizontal
|
|
height = qMax(iconWidth +
|
|
d->verticalMargin[IconWidgetPrivate::IconMargin].top +
|
|
d->verticalMargin[IconWidgetPrivate::IconMargin].bottom,
|
|
textHeight +
|
|
d->verticalMargin[IconWidgetPrivate::TextMargin].top +
|
|
d->verticalMargin[IconWidgetPrivate::TextMargin].bottom);
|
|
}
|
|
|
|
return d->addMargin(QSizeF(width, height), IconWidgetPrivate::ItemMargin);
|
|
}
|
|
|
|
} // namespace Plasma
|
|
|
|
#include "iconwidget.moc"
|